Intermediate transfer material and image-forming apparatus

Abstract

An intermediate transfer material which is disposed between a latent image-carrier and a recording medium and is primary-transferred thereon a toner image formed on the latent image-carrier, wherein the intermediate transfer material is formed by a polyimide resin having dispersed therein an electrically conductive agent and having a glass transition temperature of 245° C. or lower, and an image-forming apparatus using the above-described intermediate transfer material. The intermediate transfer material does not give image defects such as white spots, etc., caused by lowering of resistivity by the influence of a transferring electric field.

What is claimed is:  
     
       1. An intermediate transfer material that is disposed between a latent image-carrier and a recording medium so that a latent image formed on the latent image-carrier can be transferred to the intermediate transfer material and so that a toner image formed from the latent image can be transferred from the intermediate transfer material to the recording medium, wherein the intermediate transfer material is formed by a polyimide resin having dispersed therein an electrically conductive agent and having a glass transition temperature of 245° C. or lower, and wherein the polyimide resin is formed from a dehydrocondensation reaction occurring at less than 300° C. 
     
     
       2. The intermediate transfer material according to  claim 1  wherein the polyimide resin is a polybiphenyltetracarboxylic acid-base polyimide resin obtained by a dehydrocondensation reaction of a biphenyltetracarboxylic acid dianhydride and an oxydianiline. 
     
     
       3. The intermediate transfer material according to  claim 1  wherein the surface resistivity of the intermediate transfer material is in the range of from 10 10  to 10 14  Ω/□.